http://www.moj.go.jp/content/001162941.pdf

http://news.goo.ne.jp/article/gizmodo/trend/gizmodo-107329.html

http://news.goo.ne.jp/article/mainichi/nation/mainichi-20151113k0000e040230000c.html

http://headlines.yahoo.co.jp/hl?a=20151112-00005106-kana-l14

http://ch.nicovideo.jp/shukanbunshun/blomaga/ar909219 http://ameblo.jp/pompompomnoone/entry-12095240030.html